Equity Investees (Consolidated Financial Statements Related to Equity Investees) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Equity Method Investments and Joint Ventures [Abstract]
Genesis’ share of operating earnings	$ 72,554,000	$ 80,461,000	$ 68,469,000
Amortization of differences attributable to Genesis’ carrying value of equity investments	(14,263,000)	(14,263,000)	(14,263,000)
Net equity in earnings	58,291,000	66,198,000	54,206,000
Distributions earned(1)	$ 81,752,000	$ 90,833,000	$ 75,406,000